Gutter-broom street sweeper



March 18, 1930. F. D. WILSON GUTTER BROOM STREET SWEEPER Filed Feb. 1e, 19x, 4 sheets-sheet 1 Masch 18, 1930.

F. D. WILSON GUTTER BROOM' STREET SWEEPER Filed Feb. 16, 1925 4 Sheets-Sheet 2 N March 18, 1930. F D WILSQ GUTTER BRooM STREET swEEPER 4 Sheets-Sheet 3 Filed Feb. 16, 1925 eC/g www QQ NS Il. 4il:

Marcil 18, 1930.

F. D. wlLsoN 1,750,829

GUTTER BROOM STREET SWEEPER Filed Feb. 16, 1925 V4 sheets-sheet 4 Patented Mar. 18, 19.30

UNITED STATES PATENT ori-ica FRED D; wILsoN, oF'riARvEY, ILLINOIS, Assrenon rro AUsfrm MANUFACTURING co., or CHICAGO, ILLiNors, A CoRPoRA'rroN or ILLrNors GUTTER-BRUCE STREET SWEEPER Application filed February 18, 1925. Serial No. 9,600.

This invention relates to power driven street sweeping machines, and particularly to that type havin among its e uipment a gutter broom rotata le on avertica axis. The

` object of this invention is` to provide a novel mounting for such a gutter broom permitting its vertical elevation under the control of an operatorand itsv vlateral swinging Vto allow for obstructions encountered in sweeping the gutter or other part of the street. i

The invention consists in mechanismcapable of attaining the foregoing and other objects; which canrbe comparatively easily Vand cheaply made; which is very satisfac tory in use and is not readily liable to vget.

-out oforder'. More particularly, the invention consists in numerousffeatures and details of construction which will be hereafter more fully lset forth in the specification and claims. i

Referring to the drawings in which like numerals o; reference refer tothe same parts throughout the several Views:

Figure 1 is aside elevationof a conventional street sweeper mechanism equipped -with the mechanism of this invention in its preferred form.

Figure 2 is a plan view of the essential parts of Figure 1, taken at a point Just above the mechanism especially entering into ,this invention.

Figure 3 is a detail, side elevation of the brush operating `mechanism taken Von the line 3 3 of Figure 2.

Fiff'ure 4 is a sectional, end view taken on i vthe liane 4--4 of Figure 3.

Figure 5 is a corresponding view'taken on the line 5--5 of Figure 3.

Figure 6 is an enlarged, front end View of the gutter broom mechanism taken from the right of Figure 1.

' Figure-7 is a sectional detail view on th line 7-7 of Figure 3.

Figure 8` is a sectional, end, detail view Ataken on the line 8-8 of Figure 2.

The more or less conventional street sweeper to whichthe gutter broom mechanism of this invention is applied, as shown in the drawings, includes a trame 10 sustained by front steering wheels 12 and rear traction wheels 14, respectively, and is equipped wit-h the conventional, transverse, rotatable brush 16 delivering gathered dirt into anelevator 18 adapted to deposit the dirt in a stor- 'age bin 20 immediately behind the operators seat 22 behind the hood 24 of a conventional form of internal combustion en ine 25, the entire mechanism being steere alongn the street'by proper manipulation Vof a conven tional hand Awheel 26 in front of the opera-- tor. The rear of the machine is provided vwith a conventional water. storage tank 28.;

The engine main shaft 30 througih ther -agency of a conventional transmission mechanism 32 drives a transverse shaft 34 Von which is at least one sprocket pinion 3.6 traversed by a sprocket chain .38 engaging and driving a sprocket gear 40 on an adjacent hub 42 .of one of therear wheels 14 of the ma-Y chine. By this mechanism, the engine drives isis the street sweeper along the road in `conventional manner.

The wheel 14 and its hub 42, `just referred to, are rotatably mounted on a Ahorizontal shaft 44, carrying at any convenient point f thereon a sprocket gear 46 driving throu ha chain 48, a sprocket pinion .50 on a Ysha t 52 journaled in a gear case 54. This shaft 52,

through the agency of conventional gearsnot.

shown in detail but located within gear case 54, drives transverse shaft 56, suitably journaled on th iframe of the machine, as, for instance, brackets 58. Shaft 56 carries sprocket wheel 60, interfitting with a chain 62, which, Y, l

through the agency of a conventional sprocket Vwheel 64, drives the conventional elevator mechanism 18, not shown in detail. Shaft 56 also carries a sprocket wheel 66 driving a sprocket chain 6 8 traversing a sprocket pinion on yavshort, transverse shaft 7 2y mounti the adjacent end of shaft 82 rotates.

Y substantially Screw threaded, or otherwise rotatably secured to a hub extension 88 on the gear case 84'within' which the bearing. 86 is rotated is a tubular vshaft enclosing member 90 extending along theA entire length of the shaft the opposite or forward end cfu-shaft and screw threaded on the adjacent'end of tubular case 90 is another gear case hubl 92 providedwith anti-friction bearings V94 for y the adjacent end of shaft 82. On' the extreme forward end of shaft pinion ,96 is another bevel Meshing with this vertically disposed gutter pinion 98 rigid on a broom shaft 104 whose end above pinion 98 is f Vcarried by 'roller bearings 100 journaled in the capor cover l102 of gear case which enlg'ofcloses' shaft 104.Y Shaft 104 below anti-fricx l tion *bearingsl l, carries gutter ofv gear ease 110 1s a' 108V in kwhich it is journaled broom^112.Y At the front end removed, the interior of this gear case may be the likeV for lubricating VFrom thev foregoing, it is'obviou's that rota- (driven through 4themechaengine'T 25) operates ine tothe dotted line position (if Figure 1.Vv Manual elevation-bf the arts yjust rebe ac complishe by many deviS, YIarticularly"the onesY shown ,in the drawings, consisting V'of'a lever 118 pivoted one bolt r selectively locatable'-atdiferent the mechanismy new under consideration willv heightsn selected holes 122 in abracltet'124 the underside of theramer ofthe This lever carries Va .roller 126 the under side ofshaft case 90. roller 1261is a; lever handle 128 the-operator from" the full line traversing Above this gvraspable'.r by

l Y to the dotted line'. position Vof Figure 1 to thereby cause the lroller to travelA along the l the full line to the dotted line position; The' under side l l v vate the entire gutter broom mechamsm from operation'of-this lever is facilitated by ro- Y viding a retractile spring 130, one of `w ose en d'sisv pivotallyconnected through Va yoke 132 to the shaft 134 on vwhich'roller 126 turns, the other end of' said spring being adjustab y connectedV through a rod 138 toa lug 140on the under side of shaft case/90.) Vthe spring'mech'anism, sufficient tensionY can .put upon-'lever 128 so that roller 126 will remain Apractically any position between tne dottedland-fullline positions of Figure 1 .t eroperatorlmay elect yto leave the roller and, .Y

consequently,

82,v adjacent toL these anti-friction bearings is av bevel pinion 96. 4

f l v perforation 114 closed Y ,1a-.detachable cap 116. When the Vcap is.

and yet llimit the of the case and iny so doingto ele-Y gutter broom 112 can rock in vtion about the axisof shaft 136Aand a'nutVr y properly adjustinv this end of D 'vatable from the full line" to the dott position of Figure 1.

mayV elect to have the gutter broom elevated. Lever 128 is stopped in its movementto the left as viewed in Figure 3 by a'suitably disposed stationary stop 142.

The movement of arm yor casev 90 and conlsequently of the gutter broomfin a. verticalV planeis guided through the'agency of a crosshead 144 sliding in vertical, parallel guides 146 suitably rigidly mounted upon a bracket 148 on the frame of the machine.. 'Wear occurring in the guide mechanism may be taken out through the provision'of suitable adjusting nuts 150 and 152 clearly shown in Figure 5 with the result that the lateral position of the shaft 82 is always positively controlled by the Vframe through this guide mechanism. Tubular case 90 is rotatablefonits axis in crosshead 144' and the opposite or left hand Ydirection as viewed in This rotarymovement of thejgutter broom'in "a generally hori-` zontal plane is resisted by a retractile spring swing when required in in the curb 156'in which' Vobstructions occur re- I l VYend of the case is rotatable through such arc y -as may be required on the screw threadsf154 85 158 vattachedat one end to a fixed member 160 o n the frame of the machine and at the Vother end to av lever 162rigidly secured on case 9,0 by' an suitable means, a,sfor instance,

the clampco lar 164. Rigidly secured tolkcase 90 by any suitable means, in -theparticular case here illustrated depending y,from 'an-d. -rigid with clamprollar 164 "a lever 166 having a roller 16S-located 170, having sufficient Vertical opening between' its top 172 Vand itsv bottom 174 so; that within astop cam Vnils Y not interfere with the vertical elevation ofV f the gutter broom from thefullvline to the dottedjline i position "of, FigureV 1, as heretoforedescribed,4 said sto camk also having suiicient space between viitsinner front wall 176'and its inner rear wall '178,'y to allow 4for angular rtation of ease` 90, shaft 82 and consequently gutter kbroom y112 about theaxis of shaft 82.n Il

n other words, a counterclockmechanism just described, i j

vSald ',brfoom can, on

meeting obstacles, rock'rin-afv'ertical,v plane about the axis of shaft 82' `an f angular ,'disi ltance determined bylstop cam `a'nd so` far as these movements are concerned can be driven continuously by the engine 25. The power transmitting mechanism between shaft 72 and broom 112 is made of suiiicient length so that asl the broom is raised and lowered, the broom travels in a vertical arc which is as near as possible a straight line thus keeping the bottom of the brush as nearly horizontal as practical in all positions, thus enabling the brush to do most eicient work over variations in street surface.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a power driven street sweeper, a.

' means being attached to the frame'and engagin said housing, and yieldable means attache to said housing and connected to said frame for restricting the rotation of said housing about said shaft.

2. In a power driven street sweeper, a frame, power delivery means carried by said frame, a powertransmitting shaft operatively connected at one end to said power delivery means and extending a substantial distance therefrom lengthwise and' forwardly of the frame, a housing for said shaft and broom, a gutter broom operatively connected to the forward end of said shaft and mounted for rotation on an approximately vertical axis, said broom beingalso mounted to rock about said power shaft'as an axis, means pivotally connecting said power shaft and casing to the frame at a position coinciding with said power delivery means, a lever movably engaging said housing so as to rock it and its shaft on said pivotal connection, dyieldable means maintaining a tension on sai housing tending to axially rotate it in one direction,

and means for limiting said axial rotation.

`3. In a power driven street sweeper, a frame, power delivery means carried by said frame, a power transmitting shaft operatively connected at one end to said power` delivery means and extending a substantial distance therefrom len hwise and forwardly of the frame, a housing for said shaft and broom, a gutter broom operatively connected tothe forward end of said shaft and mounted for rotation on an approximately vertical axis, said broom being also mounted to rock about said power shaft as an axis,

means pivotally connecting said power shaft and casin to the frame at la position coincding wit said power deliver means, means carried by said frame for gui ing said housing during its pivotal movement, a lever movably engaging said housing so as to rock said housing and its shaft on said pivotal connection, yieldable means maintaining a tension on said housing tending to axially rotate it in one direction, and means for limiting said axial rotation in opposite directions.

4. A power driven street sweeper comprisv I rall of its. positions, means applying a yieldable vtension on said casing tending to impart the casing for limiting' said rotative 'move- -ment in opposite directions.

5. In a street sweeper, the combination with a frame provided with traction wheels 'and a source of power, of a power delivery shaft` at approximately the longitudinal me- Vdian line. of the frame and actuated by saidV source of power, a transverse horizontally disposed shaft connected to said powerdelivery shaft, a longitudinal shaft geared-to said transversel shaft and extending longitudinally and forwardly ofthe rame,.a vertically disposed broom shaft geared tothe forward end of said longitudinal shaft, a housing for said longitudinal shaft, said housing being mounted to rock about a horizontal axis, a gutter broom on the lower end of said broom shaft, means normally tending to rotate said housing in one direction, means for limiting rotation of'said houisng in both directions, and manually operable means engaging said housing so as to raise and lower the same.

with a framev having traction wheels and an engine, a power shaft rotated by the engine and located at approximately the middle of the frame, a transversely disposed horizontal shaft connected to said power shaft, a longitudinally disposed shaft geared at its rear end to said transverse shaft, an approximate-4 Vly verticall disposed broom shaft geared to the forwar end lof said longitudinal shaft, a

6. In a street sweeper, the combination` lrotative movement thereto in-one direction, and complemental meansl on theframe and gutter broom on the lower end of said broom v i shaft, said broom and its shaft being mounted to rock about said longitudinal shaft as an axis, manually operable means engaging said longitudinal shaft to elevate the forward end` thereof, yielding means normally effective to ,rotate said broom in one direction about s aid Y' longitudinal shaft, and means'for restricting the rocking movementof the broomin voppo-` site directions.V

7. Ina .streetsweeping machine, a frame,

Y front and rear wheels therefor, atransversely j A' disposed, horizontal lq shaft and adapted to roekthereabout, a'longitudinalshaft-:o'perable A i shaft, a housing for saidrlongitudinalpshaft,

,a rearfwheeh ahousingdsurrounding said lby said-'first mentioned `Va'gutter broom carriedl byV said last mentioned housing, power transmission mechanism tonnecting the longltudlnalshaft and broom, a

Y icasing communicating with said second'mentioned housing for positively positioning the y Y @broom radiallyrrelati-ve t-o the power 'shaft 20` mechanism,.said broom being rotatablycar-- and vcompletely enclosing the transmission v ried'by said second housing. f

i, In ,al l frame, -front and rear wheels therefor, a Y transversely disposed power shaft in front of n fa rearfwheel, Va longitudinalpower transmitpowerf driven street sweeper, a

, tingmeans'operated by said power shaft, a

' said'broom 1in different Y means,for :restricting the rocking of said gutter broom f pivotedto the rotatable on alvertical axis, said longitudinal vertical positions,

broomabout said, power transmitting means, means on'said transverse power shaft supplying power to the .transmitting meansto rotate the brush in all 'its adjusted positions, and

gui ingmeans on *the'frame' ycontrollingthe il have hereunto sub# scrlbed my name.

vpower shaft in front of v power transmittingmeans being frame at one end and' atthe other Vend rotatably :supportingfsaid broom, o said broom'being lmounted to rook about said v powerV transmitting means, means forplacing opposite'directions; 

